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Mimecast Advanced Email Security pros and cons

Vendor: Mimecast
4.0 out of 5
Badge Leader

Pros & Cons summary

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Prominent pros & cons

PROS

Mimecast Advanced Email Security is easy to set up and administer, providing a user-friendly admin console and straightforward setup process.
It offers robust spam and phishing filtration, effectively blocking spam and threats while ensuring business-critical emails are protected.
Mimecast provides excellent support services and reliable performance, helping organizations with continuity and technical issues.
The integration with Microsoft 365 and the ability to use Microsoft credentials enhances user access and functionality.
Mimecast's features, such as DMARC Analyzer, sandboxing, and HIPAA dictionary, offer comprehensive email security and compliance support.

CONS

Mimecast Advanced Email Security's customer support needs significant improvement, with extended response times and reliance on sending users to knowledge-based articles.
The subscription model has shifted from offering free training resources to charging fees, which is seen negatively.
Mimecast Advanced Email Security's pricing is considered expensive compared to competitors, and there have been reports of chargeable extraction fees when retrieving archived data.
The filtering system is overly restrictive, causing issues with blocking legitimate emails and attachments, leading to dissatisfaction among users.
There are ongoing issues with Mimecast's outbound mail servers being blocklisted by spam filters, affecting the delivery reputation and confidence in email communication.
 

Mimecast Advanced Email Security Pros review quotes

Ravishankar KumarPatel - PeerSpot reviewer
Solution Architect Cybersecurity at Microland Limited
Jun 10, 2026
Mimecast Advanced Email Security is a good product and is very stable.
HS
Email Security Engineer at Logic Infosecurity
Sep 8, 2025
Based on overall experience, Mimecast Email Security is the best solution for traditional gateways.
MP
Senior Security Engineer at ManpowerGroup
Jun 26, 2025
The reviewer gave Mimecast Email Security a rating of 10 out of 10.
Learn what your peers think about Mimecast Advanced Email Security. Get advice and tips from experienced pros sharing their opinions. Updated: May 2026.
900,125 professionals have used our research since 2012.
reviewer2500197 - PeerSpot reviewer
IT Manager at a logistics company with 201-500 employees
Jan 22, 2026
If I had to mention one or two things that bring the biggest benefit, I would say the security of the emails and dealing with everything.
RP
Senior Tech. Lead at WE
Nov 22, 2024
In terms of efficacy, Proofpoint is better than Mimecast, though it's a little difficult to manage.
KishoreSugumar - PeerSpot reviewer
Co-Founder & VP-Sales at QuantumShield Technologies LLP
Dec 19, 2025
I have been satisfied with Mimecast Email Security as a good solution.
Toby Elliott - PeerSpot reviewer
Head of IT & Innovation at Shoreham Port Authority
Jun 30, 2023
The setup was easy.
Frank Rawson - PeerSpot reviewer
Managing Director at Conekt Business Group
May 26, 2023
We like Mimecast's spam filtering. The email signature feature is also a big plus for our users.
Clinton Ramkelawan - PeerSpot reviewer
Senior Manager at Massmart
Aug 24, 2022
In the current environment that the world is in, everyone is trying to hack everyone else, so Project+ definitely helps a lot there.
reviewer1619394 - PeerSpot reviewer
Group CIO at a construction company with 10,001+ employees
Nov 30, 2023
The product's most valuable features are impersonation protection and phishing countermeasures.
 

Mimecast Advanced Email Security Cons review quotes

Ravishankar KumarPatel - PeerSpot reviewer
Solution Architect Cybersecurity at Microland Limited
Jun 10, 2026
Mimecast Advanced Email Security needs to improve in this area because they are only focusing on a particular set of problems which is on email and human risk, whereas companies that need a slightly bigger picture will look elsewhere.
HS
Email Security Engineer at Logic Infosecurity
Sep 8, 2025
The system is not user-friendly because you have to create policies that are mapped in a dictionary.
MP
Senior Security Engineer at ManpowerGroup
Jun 26, 2025
We discussed the phishing aspect, the DNS system, and the key rotation.
Learn what your peers think about Mimecast Advanced Email Security. Get advice and tips from experienced pros sharing their opinions. Updated: May 2026.
900,125 professionals have used our research since 2012.
reviewer2500197 - PeerSpot reviewer
IT Manager at a logistics company with 201-500 employees
Jan 22, 2026
As for areas for improvement within Mimecast Web Security, I believe there is quite a lot that can be improved.
RP
Senior Tech. Lead at WE
Nov 22, 2024
Mimecast needs to reduce the number of false positive emails; a big pain point for us.
KishoreSugumar - PeerSpot reviewer
Co-Founder & VP-Sales at QuantumShield Technologies LLP
Dec 19, 2025
Mimecast Email Security is somewhat expensive compared to the competition in the Indian market, and the local presence is lacking as they do not have a local representative currently.
Toby Elliott - PeerSpot reviewer
Head of IT & Innovation at Shoreham Port Authority
Jun 30, 2023
I did have a problem with Mimecast. That is why I was looking for an alternative solution because their sender IP address gets poorly rated by Microsoft.
Frank Rawson - PeerSpot reviewer
Managing Director at Conekt Business Group
May 26, 2023
Lately, Mimecast's outbound mail servers have been regularly blocklisted by spam filters. That didn't happen a few years back, but it seems to be a more frequent problem these days. When a server is blocklisted, it means all of my outgoing mail ends up in the recipient's junk mail. That affects my reputation and business confidence.
Clinton Ramkelawan - PeerSpot reviewer
Senior Manager at Massmart
Aug 24, 2022
The reaction time between a new threat being identified and Mimecast picking it up needs to be narrowed a bit.
reviewer1619394 - PeerSpot reviewer
Group CIO at a construction company with 10,001+ employees
Nov 30, 2023
They could provide a unified licensing model, including all the security features.